Features: This product can store three tennis balls according to pressure, with new stretch for all kinds of matching. It suitable for keep a fine ball, but not for rejuvination necrotic balls. The reason why tennis container is pressurized, the air inside will not affect the integrity of the ball. Tennis savers work on the same principle and will prevents the natural leakage of the tennis ball by keeping the ball under the correct pressure. Just as the tennis ball on the felt is intact, the tennis ball will make the bounce come true! Buy this tennis saver this simple investment will keep all your tennis elastic in the future. This will only make fresh and fresh, not used to be able to necrotic. Specifiations: Material: Add fiber imported plastics Color: orange Size: 200 * 85MM / 7.9 * 3.3in Weight: 260g / 9.2ounce Package size: 210 * 100 * 100mm / 8.3 * 3.9 * 3.9im Package weight: 390g / 13.8ounce Packing List: 1 * Tennis Protection Program